Seismic Performance of Recycled Aggregate Concrete Structures

Based on the ever finished investigations of physical and mechanical properties of recycled aggregate concrete (RAC), and a series of experimental studies on the durability, the fatigue behavior, mechanical behavior and the seismic behavior of RAC components. A full scale model of a one-storey block masonry structure with tie column + ring beam + cast-in-place slab system and a one fourth scaled model of a 6-storey frame structure, which are made of reinforced recycled aggregate concrete, are tested on a shaking table by subjecting it to a series of simulated seismic ground motions, and the seismic behaviors of the RAC structures were experimentally investigated. The dynamic characteristics and the seismic response were analyzed and discussed. The overall seismic performance of RCA structures are evaluated, the analysis results show that the recycled aggregate concrete structures with proper design exhibits good seismic behavior and can resist the earthquake attacks under different earthquake levels in this study. It is feasible to apply and popularize the RAC block masonry buildings less than 2 stories and the RAC frame buildings less than 6 stories in the region where the seismic fortification intensity is 8.

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Seismic Performance of Interior and Exterior Beam–Column Joints in Recycled Aggregate Concrete Frames

Journal of Structural Engineering ◽

10.1061/(asce)st.1943-541x.0002261 ◽

2019 ◽

Vol 145 (3) ◽

pp. 04018262 ◽

Cited By ~ 7

Author(s):

Bo Hu ◽

Tribikram Kundu

Keyword(s):

Seismic Performance ◽

Recycled Aggregate Concrete ◽

Recycled Aggregate ◽

Concrete Frames ◽

Aggregate Concrete

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Experimental study on seismic performance of low-rise recycled aggregate concrete shear wall with single-layer reinforcement

Advances in Structural Engineering ◽

10.1177/1369433216682504 ◽

2016 ◽

Vol 20 (10) ◽

pp. 1493-1511 ◽

Cited By ~ 1

Author(s):

Zhong-yi Zhou ◽

Wanlin Cao

Keyword(s):

Bearing Capacity ◽

Seismic Performance ◽

Thermal Insulation ◽

Single Layer ◽

Shear Wall ◽

Expanded Polystyrene ◽

Recycled Aggregate Concrete ◽

Experimental Results ◽

Recycled Aggregate ◽

Aggregate Concrete

A total of four full-scale low-rise recycled aggregate concrete shear wall specimens were tested adopting a quasi-static loading method to analyze the seismic performance. The low-rise shear walls consisted of recycled aggregate concrete, single-layer reinforcements, concealed special-shaped columns, and expanded polystyrene thermal insulation modules. Based on the experimental results, the seismic performance and failure characteristic of the specimens were comparatively analyzed. The factors affecting the seismic performance of the low-rise shear wall were also analyzed. The shear bearing capacity calculation model and formula of the walls were proposed based on the softened strut-and-tie model. A comparison of the calculated results and the experimental results shows that they are in good agreement. The results show that the load bearing capacity and deformation capacity can be significantly improved by expanded polystyrene thermal insulation modules, and that the shear wall specimens with higher recycled aggregate concrete strength and larger reinforcement ratio of the shear wall exhibit better seismic performance.

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STUDY ON DAMAGE CONSTITUTIVE MODEL OF RECYCLED AGGREGATE CONCRETE IN CODE FOR DESIGN OF CONCRETE STRUCTURES AND DEVELOPMENT IN ABAQUS

Journal of Physics Conference Series ◽

10.1088/1742-6596/1759/1/012002 ◽

2021 ◽

Vol 1759 ◽

pp. 012002

Author(s):

Huang Wei ◽

Yang Tao ◽

Chen Yan ◽

Ge Pei ◽

Zhou Lang

Keyword(s):

Constitutive Model ◽

Concrete Structures ◽

Recycled Aggregate Concrete ◽

Recycled Aggregate ◽

Aggregate Concrete ◽

Damage Constitutive Model

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New Eurocode 2 provisions for recycled aggregate concrete and their implications for the design of one-way slabs

Gradjevinski materijali i konstrukcije ◽

10.5937/grmk2102119t ◽

2021 ◽

Vol 64 (2) ◽

pp. 119-125

Author(s):

Nikola Tošić ◽

Jean Torrenti

Keyword(s):

Structural Design ◽

Parametric Study ◽

Concrete Structures ◽

Recycled Aggregate Concrete ◽

Recycled Aggregate ◽

Concrete Slabs ◽

Structural Level ◽

Aggregate Concrete ◽

Structural Resistance ◽

Eurocode 2

A significant amount of research has been performed on recycled aggregate concrete (RAC), both on the material and structural level. This has enabled the formulation of material and structural resistance models that can be safely and reliably used for the structural design of RAC members and the new Eurocode 2 (EC2) will contain an informative annex detailing provisions for the design of RAC. Thus, an increased market uptake of recycled aggregate (RA) can be achieved, leading to potential sustainability improvements of concrete structures. In order to familiarize designers with the new provisions for RAC, this paper presents an example of one-way slab design using varying RA substitution ratios, as well as a parametric study on the implications of RAC provisions on slab slenderness. The results of this study show that RAC one way slabs can be successfully designed using EC2. Although such slabs might require larger depths than natural aggregate concrete slabs, their applicability in the typical slenderness range is possible.

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